William Libby
CEO @ Upper90
New York, United States
William Libby is a debt financing investor at Upper90 in New York focused on Credit and FinTech. Billy is co-founder and managing partner at Upper90 which is fintech focused private equity fund based in New York. Previously, he ran electronic trading businesses at leading institutions working closely with technology, quant research and steams.
- Total investments:
- 10
- Last investment:
- Lead investor:
- 50%
Last updated:
For AI agents: llms.txt
Industries William Libby invests in
Stages William Libby invests in
Countries William Libby invests in
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Investment Focus
Industry
- Credit 2 (20%)
- FinTech 2 (20%)
- E-Commerce 2 (20%)
- Financial Services 2 (20%)
- B2B 1 (10%)
Stage
- Debt Financing 3 (30%)
- Series F 2 (20%)
- Venture - Series Unknown 2 (20%)
- Series C 1 (10%)
- Series E 1 (10%)
Country
- United States 7 (70%)
- Germany 1 (10%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Crusoe is on a mission to help the oil industry reduce routine flaring of natural gas. They are passionate about creating solutions that benefit the environment, local communities, and energy producers.Crusoe Energy Systems provides oil and gas companies with a fast, low cost and simple solution to natural gas flaring. As the energy industrystruggles with pipeline constraints and increasing regulations around flaring and combusting, Crusoe is here to help. Their service lets operators preserve or regain regulatory compliance, maintain existing production and facilitate future development. | $3.9B / Series F / Sep 03, 2026 | ||
| Octane provides a digital financing platform that enables consumers to obtain personalized loan offers for powersports vehicles, outdoor equipment, and similar lifestyle purchases, using soft credit checks that do not impact credit scores. The platform connects shoppers with dealer partners to support an end-to-end process from online rate checksto in-store financing and loan servicing. Octane also offers tools for dealers to close deals with digital approvals and paperless workflows while accommodating a range of credit profiles. The company’s services include programs tailored for different buyer types and integration features that simplify purchase decisions for both consumers and dealer partners. | $50M / Series F / Dec 15, 2025 | ||
| Crusoe is on a mission to help the oil industry reduce routine flaring of natural gas. They are passionate about creating solutions that benefit the environment, local communities, and energy producers.Crusoe Energy Systems provides oil and gas companies with a fast, low cost and simple solution to natural gas flaring. As the energy industrystruggles with pipeline constraints and increasing regulations around flaring and combusting, Crusoe is here to help. Their service lets operators preserve or regain regulatory compliance, maintain existing production and facilitate future development. | $1.4B / Series E / Oct 23, 2025 | ||
| Crusoe is on a mission to help the oil industry reduce routine flaring of natural gas. They are passionate about creating solutions that benefit the environment, local communities, and energy producers.Crusoe Energy Systems provides oil and gas companies with a fast, low cost and simple solution to natural gas flaring. As the energy industrystruggles with pipeline constraints and increasing regulations around flaring and combusting, Crusoe is here to help. Their service lets operators preserve or regain regulatory compliance, maintain existing production and facilitate future development. | $225M / Debt Financing / Mar 27, 2025 | ||
| The STAX mission is to help 1 billion people significantly through new technologies that promote health, sustainability, reduced environmental toxins, and reduced global warming. | $40M / Private Equity / Jul 17, 2024 | ||
| Braavo Capital is the premier financing partner for the world’s leading subscription apps. From the newest AI-enabled chart climbers to long-established industry leading brands, Braavo’s suite of on-demand financing solutions are designed exclusively for the needs of growing app businesses. Whether you’re a growth marketer fighting for more budget or a founder looking to stretch out cash flows, Braavo offers the financial tools for you to succeed. Founded in NYC in 2015, Braavo is proud to have provided over $2 billion in funding to app businesses over its 10-year history. | $30M / Debt Financing / May 28, 2024 | ||
| Razor is a global consumer holding company that partners with e-commerce merchants to acquire and scale brands. Razor uses significant growth capital with extensive e-commerce expertise in order to take these acquired merchants to the next stage of development. Razor focuses on specific product categories, long-term value enhancement, andfirst-class customer satisfaction. | $18M / Series C / Apr 17, 2023 | ||
| E-commerce-as-a-service: Mainfactor builds, markets, and operates direct-to-consumer businesses with artists, creators, and brands. | $65M / Debt Financing / Sep 22, 2021 | ||
| E2log is a digital ecosystem for the door-to-door shipping of oversize cargoes. Its ecosystem services include cargo assessment, packing list preparation, loading, customs clearance, port handling, international transportation, and more. The company was founded in 2018 and is headquartered in Sugar Land, Texas. | $7.1M / Venture - Series Unknown / Sep 03, 2021 | ||
| Fig partners with Family Houston to offer you a loan that is 80% cheaper and designed to get you out of debt. Fig helps you through financial emergencies and build credit towards a better future. | $23M / Venture - Series Unknown / Aug 18, 2020 |
Co-Investors
About Upper90
Upper90 provides tailored growth capital to top disruptors in eCommerce, FinTech, and Supply Chain Finance. The firm has grown AUM to $1.2B and has originated over $1B of additional co-investment capacity to LPs through SPVs and direct opportunities. Industry leaders like Thrasio, Clearco, Crusoe Energy, Clutch, Settle, and Octane have each secured an initial credit facility from Upper90, helping their founders scale with less dilution.
Upper90 Contacts
| Name | Phone | Socials | |
|---|---|---|---|
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William Libby
CEO
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Jason Finger
Chairman
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FAQ
What does William Libby invest in?
William Libby invests primarily in Credit, FinTech and E-Commerce startups, most often at Debt Financing and Series F stage. Most of the 10 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact William Libby?
Public channels for William Libby include LinkedIn. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did William Libby last invest?
The most recent investment recorded for William Libby closed in Sep 2026. Shizune tracks 10 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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